Concentrator is generally used for concentrate concentration and dehydration of tailings before filtration in dress plants to concentrate the ore pulp with concentration of 20-30% to concentration of 40-70%. It is widely used for concentration and purification of slurry containing solid materials in industries of ore dressing, metallurgy, chemical industry, coal, construction materials, and source water and wastewater treatment, etc.

NZ central transmission concentrator is the traditional concentration equipment which is applied at an early time. For diameter smaller than 12m, the rake-lifting is done manually (indicated by “S”), and for diameter larger than 12m, electric rake-lifting device is adopted (indicated by “D”); in addition, overload indication or warning device is also available. Concrete tank is generally adopted for large concentrator. This concentrator is in simple structure and convenient for maintenance with low wear.

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